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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7728047 | Process for the recycling of expanded polystyrene The invention relates to an enhanced process for the recycling of expanded polystyrene. Said process essentially comprises the reduction in volume of expanded polystyrene by means of dissolution in a solvent, separation of the insoluble components, selective precipi... | 06/01/2010 |
| 7166658 | Rubber reduction A method of reducing vulcanized rubber is provided. The method comprises the steps of heating the rubber, wherein the rubber includes synthetic rubber, in the presence of a solvent, wherein the solvent includes water to a temperature below a critical temperature of ... | 01/23/2007 |
| 6992116 | Devulcanization of cured rubber The present invention discloses a process for devulcanizing cured rubber into devulcanized rubber that is capable of being recompounded and recured into useful rubber products, said process comprising heating the cured rubber to a temperature which is within the ran... | 01/31/2006 |
| 6815510 | Elastomer reclaiming composition and method The present invention relates to elastomeric compositions and methods including compositions and methods involving the use of aromatic alcohols. The present invention further relates to elastomeric compositions that can include ground reclaimed elastomeric particles... | 11/09/2004 |
| 6689821 | Chemical method of removing paint film on plastic resin using isopropyl alcohol Thermosetting paint film is removed by adding plastic resin coated with thermosetting paint film into a mixed solution of an alcoholic solvent and alkali and heating this mixed solution while stirring. Isopropyl alcohol, phenoxy alcohol and alkali are add... | 02/10/2004 |
| 6664304 | Process for producing fine rubber powder by using waste rubber This invention provides a process for producing fine rubber powders by using waste rubber, comprising the steps of pre-pulverizing waste rubber into particles with a size of 1-4 mm; soaking the particles in a solvent selected from one or more alcohols and... | 12/16/2003 |
| 6583211 | Moldable composite material A moldable heterogeneous composite material has a continuous plastic phase (30) and a discrete phase of unground rubber (20) dispersed in the continuous phase. The composite material can be formed from thermoplastic or thermosetting materials and pieces o... | 06/24/2003 |
| 6555588 | Method for the production of a polypropylene blend A method for producing a polypropylene blend from a plastic packaging materials containing high molecular weight polypropylene, other high molecular weight polymers such as polyethylene, low molecular weight polymers and other contaminants. The method inc... | 04/29/2003 |
| 6548560 | Process for devulcanization of cured rubbers This invention is based upon the unexpected discovery that cured rubber can be devulcanized by heating it to a temperature of at least about 150° C. under a pressure of at least about 3.4×106 Pascals in the presence of a solvent selected from... | 04/15/2003 |
| 6462099 | Surface devulcanization of cured rubber crumb This invention discloses a process for devulcanizing the surface of reclaimed rubber crumb into surface devulcanized reclaimed rubber crumb that is suitable for being recompounded and recurred into high performance rubber products, said process comprising... | 10/08/2002 |
| 6387965 | Surface devulcanization of cured rubber crumb This invention discloses a process for devulcanizing the surface of reclaimed rubber crumb into surface devulcanized reclaimed rubber crumb that is suitable for being recompounded and recured into high performance rubber products, said process comprising ... | 05/14/2002 |
| 6380269 | Surface devulcanization of cured rubber crumb This invention discloses a process for devulcanizing the surface of reclaimed rubber crumb into surface devulcanized reclaimed rubber crumb that is suitable for being recompounded and recurred into high performance rubber products, said process comprising... | 04/30/2002 |
| 6346561 | Pavement material The present invention is a recipe and method for combining Gilsonite and other asphaltites with curative elastomers that are powder granular form and which are added to asphalt. Second recipe and method is disclosed to create a dry liquid concentrate comp... | 02/12/2002 |
| 6310126 | Mixer and process for use A mixer and method of using the mixer is disclosed in which a closed chambered vessel capable of both holding pressure and vacuum is charged with a mixture of elastomer and materials taken from the group of tall oil, fatty acids and residues of tall oil p... | 10/30/2001 |
| 6180753 | Process for treating a compound having epithio structures for disposal An acidic substance is added to a mixture containing a compound having epithio structures and a catalyst for curing the compound and the mixture is solidified. The mixture containing a compound having epithio structures and a catalyst for curing the compo... | 01/30/2001 |
| 6114401 | Plastic reclamation process A plastic article or plastic container reclamation process if provided in which plastic containers are divided into relatively large pieces, then washed, agitated and separated using an aqueous solvent to remove residual materials. The residual materials ... | 09/05/2000 |
| 6110580 | Recycling trim components for vehicles The invention relates to a method for the recycling of trim components of vehicles. The method comprises the steps of shredding manufacturing scrap and post-consumer scrap from vehicle headliners into small particles to produce fluff. This fluff is then c... | 08/29/2000 |
| 6087406 | Recycle of vulcanized fluorinated elastomers Compositions and techniques useful to effectively recycle crosslinked (i.e., vulcanized or cured) fluoroelastomers are disclosed. The invention utilizes an additive system that includes a cure-enhancing additive, a crosslinking agent, and an accelerator.... | 07/11/2000 |
| 5905095 | Used tire process A method of processing used tires and the recovery of the products thereof. The process includes adding shredded automobile tire to a bath containing a combination of isocyanide, polyurethane, latex, and soybean oil. The resultant mixture is then heated a... | 05/18/1999 |
| 5891926 | Devulcanization of cured rubber This invention is based upon the unexpected discovery that cured rubber can be devulcanized by heating it to a temperature of at least about 150° C. under a pressure of at least about 3.4×106 Pascals in the presence of 2-butanol. The molecula... | 04/06/1999 |
| 5716996 | Method for the recovery of secondary polyols from paint sludges The invention relates to a method for the recovery of secondary polyols from paint sludge coagulate, formed from paint overspray which has first been dewatered by mass action, by chemical treatment in a manner such that the recovered product can be reused... | 02/10/1998 |
| 5618852 | Used tire process A method of processing used tires and the recovery of the products thereof. The process includes adding shredded automobile tire to a bath containing a combination of isocyanide, polyurethane, latex, and soybean oil. The resultant mixture is then heated a... | 04/08/1997 |
| 5607981 | Method of manufacture of paint and adhesive rubber from vulcanized rubber Method of manufacture of paint and adhesive of rubber from vulcanized rubber that is reclaimed, becoming a product that provides impermeability, flexibility and resistance to the pellicle by process of reduction to small particles through cracking beater ... | 03/04/1997 |
| 5604277 | Rubber and plastic bonding A dry liquid concentrate mixture is disclosed comprising crumb rubber particles and tall oil, tall oil derivatives or other fatty acids, which may be enhanced by other components, such as modifiers, for use to enhance the properties of parent materials, s... | 02/18/1997 |
| 5597852 | Method and apparatus for reprocessing solid polyester material A method to work-up waste material of polyethylene terephthalate (PET) in solid form and having a high initial viscosity for multivalent reuse and to recondense it to a high viscosity. The method includes the chemical regeneration and conversion of the re... | 01/28/1997 |
| 5516809 | Method for obtaining an elastomer product with high petroleum and its by-products absorption power Methods for obtaining an elastomer product capable of absorbing petroleum and its by products including the steps of forming a mixture of waste vulcanized rubber, resin and organic solvent, grinding the mixture in a mill in the presence of manganese to pr... | 05/14/1996 |
| 5514721 | Thermoplastic compositions having altered reclaimed rubber therein and method for making same A composition containing reclaimed vulcanized rubber particles and capable of being recycled by melting is disclosed. A thermoplastic substrate is first melted, and an acid or base deflocculant and emulsifier for the rubber particles is added and mixed. T... | 05/07/1996 |
| 5475036 | Process for reusing plastic articles with coatings A process for reusing a plastic article having a plastic body and a coating layer is discloses which includes the following steps: peeling the coating layer, formed on the plastic body, away from the plastic body by using a high pressure water jet stream;... | 12/12/1995 |
| 5464877 | Method for recovering a synthetic waste material contaminated with other materials A method for recovering a synthetic waste material contaminated with other materials, particularly waste optical disks, wherein the loose, uncrushed waste is chemically treated by impregnating said other materials with a chemical solution which attacks th... | 11/07/1995 |
| 5420166 | Glycolysis of cured unsaturated polyesters for producing a recycle reactant The present invention is directed to a method for treating cross-linked (cured) filled or untilled unsaturated polyester for deriving an alcohol recycle reactant useful in the synthesis of alcohol-formed derivative products. The first step of the method i... | 05/30/1995 |
| 5418256 | Method of reclaiming scrap vulcanized rubber using supercritical fluids The invention pertains to a method of treating vulcanized rubber, such as scrap tires, in which the copolymer is treated with an organic solvent under supercritical conditions, such that an organic solution of several by-products is obtained. These can be... | 05/23/1995 |
| 5389691 | Process for co-recycling tires and oils A thermal process co-recycles tires with oils to produce gases, liquids and solids. The letter consisting of glass and steel fibers and a carbonous residue which are separately segregated and collected. By using selected additives gas formation and hydrog... | 02/14/1995 |
| 5380793 | Styrene soluble unsatured polyester resin from polyethylene terephthalate This invention is a low cost styrene-soluble unsaturated polyester resin made using recycled or virgin polyethylene terephthalate. The PET is first glycolyzed using inexpensive glycols and then reacted with maleic anhydride and dicyclopentadiene, forming ... | 01/10/1995 |
| 5377844 | Separation of normally hydrophobic plastic materials by froth flotation A targeted particulate, synthetic organic plastic material having normally hydrophobic surface characteristics is separated from a mixture of two or more of such plastic materials by conditioning the mixture of plastic materials in a flotation cell with a... | 01/03/1995 |
| 5286463 | Composition for recovering metals and process for using same A novel composition for use in reducing and recovering metals, such as silver, and for use in stripping adhesive polymer layers from various polymer bases, such as polyester, and processes for using same are provided. The composition and variations thereo... | 02/15/1994 |
| 5120768 | Process for separating polyethylene terephthalate from polyvinyl chloride Today there is a growing demand to recycle plastics including polyethylene terephthalate. Sources of polyethylene terephthalate for recycling often contain polyvinyl chloride. It is necessary to separate polyvinyl chloride from the polyethylene terephthal... | 06/09/1992 |
| 4876288 | Carrier material for immobilization of microorganisms Carrier material for the immobilization of microorganisms, particularly for use in connection with microbiological conversion and/or separation of constituents from gaseous or liquid media, is disclosed. The carrier material comprises a dimensionally stab... | 10/24/1989 |
| 4426459 | Process for decomposing vulcanized rubber A process for decomposing vulcanized rubber which comprises swelling 100 parts by weight of vulcanized rubber with 10-3000 parts by weight of an organic solution, and adding and mixing 0.1-20 parts by weight of an organic hydroperoxide (a) and of 0.001-1 ... | 01/17/1984 |
| 4386182 | Thermoplastic elastomeric composition containing vulcanized rubber particles and surfactant and process for preparation thereof Thermoplastic elastomeric compositions are prepared by mixing comminuted vulcanized rubber having a mean particle size of below 1.5 mm with a thermoplastic olefin or diolefin polymer, particular polyethylene, at a weight ratio of from 1:3 to 3:1, and with... | 05/31/1983 |
| 4324705 | Process for recovering materials from scrapped film A process for recovering materials from scrapped film is described which comprises separating coating layers and a film base from a scrapped film having at least one coating layer on a plastic film base in a sheet or web form, wherein the improvement comp... | 04/13/1982 |
